CN112172545B - Super capacitor control system and method for fuel cell automobile with super capacitor - Google Patents

Super capacitor control system and method for fuel cell automobile with super capacitor Download PDF

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Publication number
CN112172545B
CN112172545B CN202011048969.8A CN202011048969A CN112172545B CN 112172545 B CN112172545 B CN 112172545B CN 202011048969 A CN202011048969 A CN 202011048969A CN 112172545 B CN112172545 B CN 112172545B
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power
super capacitor
fuel cell
hvload
dcdc converter
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CN112172545A (en
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李昌泉
郝义国
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Wuhan Grove Hydrogen Energy Automobile Co Ltd
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Wuhan Grove Hydrogen Energy Automobile Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/40—Electric propulsion with power supplied within the vehicle using propulsion power supplied by capacitors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/70—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
    • B60L53/20—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by converters located in the vehicle
    • B60L53/22—Constructional details or arrangements of charging converters specially adapted for charging electric vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/30—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling fuel cells
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/10—DC to DC converters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2210/00—Converter types
    • B60L2210/40—DC to AC converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/40—Application of hydrogen technology to transportation, e.g. using fuel cells

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)
  • Fuel Cell (AREA)

Abstract

The invention discloses a super capacitor control system and method of a fuel cell automobile with a super capacitor, which comprises a hydrogen fuel cell, a DCDC converter, a DCAC converter, a motor, a main speed reducer, wheels, the super capacitor, a bidirectional DCDC converter and a power battery, wherein the output end of the hydrogen fuel cell is connected with the input end of the DCDC converter, the first output end of the DCDC converter is connected with the input end of the DCAC converter, the output end of the super capacitor is connected with the input end of the bidirectional DCDC converter, the second output end of the DCDC converter is respectively connected with the bidirectional DCDC converter and the power battery, the output end of the DCAC converter is connected with the input end of the motor, the output end of the motor is connected with the input end of the main speed reducer, and the main speed reducer is connected with the wheels.

Description

Super capacitor control system and method for fuel cell automobile with super capacitor
Technical Field
The invention relates to the technical field of fuel cell automobiles with three energy systems, in particular to a super capacitor control system and method of a fuel cell automobile with a super capacitor.
Background
At present, fuel cell vehicles have become a development trend, but most of them use power batteries as auxiliary energy sources. The charging and discharging performance of the power battery is greatly influenced by temperature, the charging and discharging power is low, energy generated during vehicle braking cannot be completely recycled, and the charging and discharging times are few. The super capacitor is well known for wide working temperature range, large charging and discharging power and many times of charging and discharging. Therefore, the performance of the power battery is complementary with that of the super capacitor, and an auxiliary energy system consisting of the power battery and the super capacitor can give full play to energy efficiency and improve the driving mileage of the automobile.
Disclosure of Invention
In view of this, the present invention provides a super capacitor control system and method for a fuel cell vehicle with a super capacitor.
The utility model provides a take super capacitor control system of super capacitor's fuel cell car, includes hydrogen fuel cell, DCDC converter, DCAC converter, motor, main reducer, wheel, super capacitor, two-way DCDC converter and power battery, the input of DCDC converter is connected to hydrogen fuel cell's output, and the input of DCAC converter is connected to the first output of DCDC converter, and the input of two-way DCDC converter is connected to super capacitor's output, and the second output of DCDC converter is connected with two-way DCDC converter and power battery respectively, and the input of motor is connected to the output of DCAC converter, and main reducer's input is connected to the output of motor, and main reducer is connected with the wheel.
Further, the fuel cell output power is divided into an idle power IP, an optimum power BP, and a maximum power MP.
Further, the whole vehicle working mode comprises a driving mode DM and a feedback mode RM; the power requirements include a zero power requirement Z, a small power requirement S, a medium power requirement M, and a large power requirement L.
A super capacitor control method of a fuel cell automobile with a super capacitor comprises the following steps:
s1, determining the working mode of the super capacitor according to the working condition;
s2, calculating the required power P of the super capacitor according to the load condition of the whole vehiclesc；
S3, calculating bidirectional DCDC working current I of super capacitorscdc＝Psca/U, where U is the high voltage bus voltage, PscIs the required power of the super capacitor.
Further, in S1, the super capacitor operating modes include a charging mode CM, a discharging mode DCM, and a standby mode IM.
Further, the required power P of the super capacitorscThe calculation formula of (a) is as follows:
Psc＝Pmot+PHVload-Pfcs-Pbat
wherein, PmotFor the power demand of the motor, PHVloadFor high voltage load power, PfcsIs the fuel cell power, PbatIs the power of a power battery.
Further, said Pmot、PHVload、，PfcsAnd PbatThe calculation formulas of (a) are respectively as follows:
Pmot＝min(f(accpct，brkpct)，Pm)
wherein accpct is accelerator pedal opening, brkpct is brake pedal opening, and PmWhen the motor is at maximum power, P is the driving mode DM of the whole vehiclemotPositive, feeding back P in mode RMmotIs negative;
PHVload＝UHVload*IHVload
wherein, UHVloadVoltage sent for the CAN bus, IHVloadIs the current value;
Pfcsdetermining idle speed power IP, optimal power BP and maximum power MP according to the power requirement of the whole vehicle;
Pbatthe power demand of the power battery is adjusted in real time according to the value of the SOC of the power battery.
The technical scheme provided by the invention has the beneficial effects that: the working mode and the working state of the super capacitor can be switched and controlled according to the intention of a driver, and the characteristics of large electric power and high efficiency of a charging point of the super capacitor are fully exerted.
Drawings
FIG. 1 is a diagram of a super capacitor control system and method for a fuel cell vehicle with super capacitor according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, the super capacitor control system of a fuel cell vehicle with a super capacitor according to the present invention includes a hydrogen fuel cell, a DCDC converter, a DCAC converter, a motor, a main reducer, wheels, a super capacitor, a bidirectional DCDC converter, and a power battery, wherein an output end of the hydrogen fuel cell is connected to an input end of the DCDC converter, a first output end of the DCDC converter is connected to an input end of the DCAC converter, an output end of the super capacitor is connected to an input end of the bidirectional DCDC converter, a second output end of the DCDC converter is respectively connected to the bidirectional DCDC converter and the power battery, an output end of the DCAC converter is connected to an input end of the motor, an output end of the motor is connected to an input end of the main reducer, and the main reducer is connected to the wheels.
The fuel cell output power is divided into an idle power IP, an optimum power BP, and a maximum power MP.
The whole vehicle working mode comprises a driving mode DM and a feedback mode RM; the power requirements include a zero power requirement Z, a small power requirement S, a medium power requirement M, and a large power requirement L.
A super capacitor control method of a fuel cell automobile with a super capacitor comprises the following steps:
s1, determining the working mode of the super capacitor according to the working condition;
s2, calculating the required power P of the super capacitor according to the load condition of the whole vehiclesc；
S3, calculating bidirectional DCDC working current I of super capacitorscdc＝Psca/U, where U is the high voltage bus voltage, PscIs the required power of the super capacitor.
S1 the working modes of the super capacitor include a charging mode CM, a discharging mode DCM and a standby mode IM, as shown in table 1:
TABLE 1
Vehicle mode Power requirement of whole vehicle Super capacitor mode of operation Fuel cell power
DM Z IM IP
DM S IM IP
DM M IM BP
DM L DCM MP
RM Z IM IP
RM S IM IP
RM M CM IP
RM L CM IP
The required power P of the super capacitorscThe calculation formula of (c) is as follows:
Psc＝Pmot+PHVload-Pfcs-Pbat
wherein, PmotFor the power demand of the motor, PHVloadFor high voltage load power, PfcsIs the fuel cell power, PbatIs the power of a power battery.
The P ismot、PHVload、，PfcsAnd PbatThe calculation formulas of (A) are respectively as follows:
Pmot＝min(f(accpct，brkpct)，Pm)
wherein accpct is accelerator pedal opening, brkpct is brake pedal opening, and PmWhen the motor is at maximum power, P is the driving mode DM of the whole vehiclemotPositive, feeding back P in mode RMmotIs negative;
PHVload＝UHVload*IHVload
wherein, UHVloadVoltage sent for the CAN bus, IHVloadIs the current value;
Pfcsdetermining idle speed power IP, optimal power BP and maximum power MP according to the power requirement of the whole vehicle;
Pbatthe power demand of the power battery is adjusted in real time according to the value of the SOC of the power battery as a passive element of the power battery, as shown in the table 2:
TABLE 2 Power adjusting table for power battery
SOC(％) Pbat(KW)
0 30
10 30
20 30
30 30
35 25
40 15
45 5
50 0
55 -5
60 -15
65 -25
70 -30
80 -30
100 -30
PfcsThe idle power IP, the optimal power BP and the maximum power MP are determined according to the power requirement of the whole vehicle.
In the present invention, the above-mentioned embodiments and features of the embodiments can be combined with each other, and the above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (2)

1. The super-capacitor control system of the fuel cell automobile with the super-capacitor is characterized by comprising a hydrogen fuel cell, a DCDC converter, a DCAC converter, a motor, a main speed reducer, wheels, the super-capacitor, a bidirectional DCDC converter and a power battery, wherein the output end of the hydrogen fuel cell is connected with the input end of the DCDC converter, the first output end of the DCDC converter is connected with the input end of the DCAC converter, the output end of the super-capacitor is connected with the input end of the bidirectional DCDC converter, the second output end of the DCDC converter is respectively connected with the bidirectional DCDC converter and the power battery, the output end of the DCAC converter is connected with the input end of the motor, the output end of the motor is connected with the input end of the main speed reducer, and the main speed reducer is connected with the wheels;
the control method for the super capacitor control system of the fuel cell automobile with the super capacitor comprises the following steps:
s1, determining the working mode of the super capacitor according to the working condition, wherein the working mode of the super capacitor corresponds to the output power of the fuel cell one by one;
s2, calculating the required power P of the super capacitor according to the load condition of the whole vehiclesc；
S3, calculating bidirectional DCDC working current I of super capacitorscdc=Psca/U, where U is the high voltage bus voltage, PscThe required power for the super capacitor;
wherein the output power of the fuel cell is divided into idle power IP, optimal power BP and maximum power MP;
the required power P of the super capacitorscThe calculation formula of (a) is as follows:
Psc=Pmot+PHVload-Pfcs-Pbat
wherein, PmotFor the power demand of the motor, PHVloadFor high voltage load power, PfcsIs the fuel cell power, PbatPower for the power battery;
the P ismot、PHVload、PfcsAnd PbatThe calculation formulas of (A) are respectively as follows:
Pmot=min（f（accpct，brkpct），Pm）
wherein accpct is accelerator pedal opening, brkpct is brake pedal opening, and PmWhen the motor is at maximum power, P is the driving mode DM of the whole vehiclemotPositive, feeding back P in mode RMmotIs negative;
PHVload=UHVload*IHVload
wherein, UHVloadVoltage sent for the CAN bus, IHVloadIs the current value;
Pfcsdetermining idle speed power IP, optimal power BP and maximum power MP according to the power requirement of the whole vehicle;
Pbatthe power demand of the power battery is adjusted in real time according to the value of the SOC of the power battery;
the whole vehicle working mode comprises a driving mode DM and a feedback mode RM; the power requirements include a zero power requirement Z, a small power requirement S, a medium power requirement M, and a large power requirement L.
2. The supercapacitor control system for a supercapacitor powered fuel cell vehicle according to claim 1, wherein the supercapacitor operation modes S1 include a charge mode CM, a discharge mode DCM and a standby mode IM.
CN202011048969.8A 2020-09-29 2020-09-29 Super capacitor control system and method for fuel cell automobile with super capacitor Active CN112172545B (en)

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CN113401009B (en) * 2021-07-09 2022-11-29 东风汽车集团股份有限公司 Electric-electric hybrid fuel cell automobile energy management system and control method thereof
CN113561802B (en) * 2021-09-22 2021-12-21 北京亿华通科技股份有限公司 Operation auxiliary device of vehicle-mounted fuel cell and control method thereof
CN114013342B (en) * 2021-12-17 2024-06-14 北京亿华通科技股份有限公司 Fuel cell engine control system

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Publication number Priority date Publication date Assignee Title
CN202641416U (en) * 2012-06-01 2013-01-02 武汉理工大学 Mixed parallel power system of vehicle-mounted fuel cell, storage battery and super capacitor
CN104859478A (en) * 2015-05-08 2015-08-26 郑州宇通客车股份有限公司 Fuel cell locomotive and power system thereof
CN204726251U (en) * 2015-05-08 2015-10-28 郑州宇通客车股份有限公司 Furl cell engine and power system thereof
CN107054140A (en) * 2017-04-24 2017-08-18 哈尔滨理工大学 Fuel cell hybrid car energy-storage system and energy distributing method based on elastic energy storage
CN110605977A (en) * 2019-09-04 2019-12-24 武汉格罗夫氢能汽车有限公司 Fuel cell energy management system of hydrogen energy automobile

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN202641416U (en) * 2012-06-01 2013-01-02 武汉理工大学 Mixed parallel power system of vehicle-mounted fuel cell, storage battery and super capacitor
CN104859478A (en) * 2015-05-08 2015-08-26 郑州宇通客车股份有限公司 Fuel cell locomotive and power system thereof
CN204726251U (en) * 2015-05-08 2015-10-28 郑州宇通客车股份有限公司 Furl cell engine and power system thereof
CN107054140A (en) * 2017-04-24 2017-08-18 哈尔滨理工大学 Fuel cell hybrid car energy-storage system and energy distributing method based on elastic energy storage
CN110605977A (en) * 2019-09-04 2019-12-24 武汉格罗夫氢能汽车有限公司 Fuel cell energy management system of hydrogen energy automobile

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